optimumm.eu

Valid Email Server
Domain Lookup › optimumm.eu

Domain Overview

DNS: ✓ 2mo ago Checker: ✓ 2mo ago
optimumm.eu
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No

Checked via [email protected] · 2026-03-28 22:24:57 UTC · ↺ Refresh

MX Hostnames

  • red.aufbaugilde.de

MX Priorities

  • red.aufbaugilde.de: 10

A / AAAA Records

  • 217.30.50.64 (no PTR)

Mail Server IPs

  • 217.30.50.126 ↩ red.aufbaugilde.de

SOA Record

Raw SOA ns1.centaur-it.net do-not-reply.optimumm.eu 2025091700 43200 7200 1209600 86400
Primary NS (mname)
ns1.centaur-it.net
Admin Email (rname)
do-not-reply@optimumm.eu
Serial
2025091700
Refresh
43200s
Retry
7200s
Expire
1209600s
Minimum TTL
86400s

Nameservers (NS)

ns1.centaur-it.net
ns2.centaur-it.net
ns4.centaur-it.net
ns3.centaur-it.net

SPF Record

✓ Strict (-all)
v=spf1 mx a include:_spf.rexx-suite.com include:spf.nl2go.com a:mx01.rexxsystems.de ip4:82.210.228.146 ip4:217.30.63.30 ip4:217.30.49.92 ip4:79.216.145.50 ip4:217.30.50.64 ip4:217.30.50.126 -all
📊 DNS lookups: 5/10
✓ Hard fail (-all) — strict enforcement

DMARC Record

✗ Missing

No DMARC record — emails cannot be rejected on auth failure.

DKIM Selectors

✓ 2 found
selector1._domainkey
selector2._domainkey
✓ Public key: 392 chars (valid)
✓ DKIM properly configured for selector: selector1

Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses

All TXT Records

2 records
  • SPFv=spf1 mx a include:_spf.rexx-suite.com include:spf.nl2go.com a:mx01.rexxsystems.de ip4:82.210.228.146 ip4:217.30.63.30 ip4:217.30.49.92 ip4:79.216.145.50 ip4:217.30.50.64 ip4:217.30.50.126 -all
  • _globalsign-domain-verification=4LhKXqDKBhze9heGT2BTskuSyv6zojAkCJ4iRjuHej
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